CN110023470B - Cleaning composition and test method for intake valve deposits - Google Patents

Cleaning composition and test method for intake valve deposits Download PDF

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Publication number
CN110023470B
CN110023470B CN201780056346.5A CN201780056346A CN110023470B CN 110023470 B CN110023470 B CN 110023470B CN 201780056346 A CN201780056346 A CN 201780056346A CN 110023470 B CN110023470 B CN 110023470B
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Prior art keywords
surfactant
cleaning composition
engine
cleaning
intake valve
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CN110023470A (en
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希达·哈斯诺维克
大卫·E·特科特
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Shengpai Global Product Intellectual Property Co ltd
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Ashland Licensing and Intellectual Property LLC
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5004—Organic solvents
    • C11D7/5022—Organic solvents containing oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/835—Mixtures of non-ionic with cationic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0017—Multi-phase liquid compositions
    • C11D17/0021—Aqueous microemulsions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2093—Esters; Carbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/32—Amides; Substituted amides
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/43—Solvents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/266—Esters or carbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3263—Amides or imides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/007—Heating the liquid
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
    • C11D1/521—Carboxylic amides (R1-CO-NR2R3), where R1, R2 and R3 are alkyl or alkenyl groups
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/16—Metals
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The cleaning composition is particularly suitable for cleaning dirty air intake valves. The cleaning composition comprises a high solvency surfactant/solvent having a Kb greater than 100 or a polar hansen solubility parameter greater than 6. The surfactant/solvent is combined with an organic carrier and a surfactant. Wetting agents may also be used. The cleaning composition is added to the intake air as a mist when the engine is running.

Description

Cleaning composition and test method for intake valve deposits
Cross Reference to Related Applications
This application is a continuation of the partial application of PCT application No. PCT/US2016/51476, filed 2016, 9/13, which claims priority to US application No. 62/220273, filed 2015, 9, 18, the disclosure of which is 62/220273, the entire contents of which are hereby incorporated by reference.
Background
Gasoline direct injection engines bypass the intake valve and add fuel directly to the combustion chamber for efficient combustion. Some of the exhaust and crankcase vapor gases are recirculated back to the intake port and past the intake valve. This can lead to build up of carbonaceous material on and around the manifold and intake valves, ultimately reducing fuel efficiency and performance.
Some of this deposit can be removed by adding a cleaning composition to the air intake. Cleaning compositions currently generally based on organic solvents are only suitable for gasoline engines and not for diesel engines. The combustion value of the solvent causes an unexpected increase in engine acceleration, sometimes resulting in damage caused by uncontrolled or uncontrolled combustion.
Disclosure of Invention
According to the present invention, the cleaning composition is used for cleaning an intake valve of a gasoline engine by injecting the cleaning composition into an intake port of the engine while the engine is running. The cleaning composition dissolves and removes the oily carbonaceous buildup on the intake valve.
The cleaning composition uses a solvent/surfactant having a combustion value and an organic vehicle for a gasoline engine.
Detailed Description
The cleaning composition for gasoline engines of the present invention comprises a non-aqueous organic vehicle, an organic solvent having high solvency and no combustion value, and suitable surfactants and wetting agents.
The organic solvent, also referred to as surfactant/solvent, used in the present invention must have a high solvency power to effectively dissolve the oil, such as the oil in the carbonaceous buildup on the intake valve. The solvency can be defined by kauri-butanol value or hansen solubility parameter. The organic solvent should have a solvency of at least 100, more typically 500, 1000 or more than 1000, as defined by the Kb value (measured by ASTM D1133). There are three different hansen solubility parameters: a dispersion parameter; a polarity parameter; and hydrogen bonding parameters. The polarity parameter is more predictive of the ability of the solvent to dissolve the oily composition. Generally, the polarity parameter should be at least 6, preferably 6.4 or higher, e.g. 9.5 or higher. Solvents having high Kb values or high polar hansen solubility parameters may be used in the present invention. One such solvent is from Stepan corporation
Figure BDA0001993744070000023
And (4) SC. Another such solvent is from Eastman Chemi, Inc. (Eastman Chemi)cal Co.). Another such solvent is TomaKleen G-12 from Air Products and Chemicals, Inc. Another such solvent is Radia 7543 from Oleon (Oleon). Other such solvents include Vertec BioElsolTR and Vertec Bio Clean ECO-Solv from Vertec BioSolvents.
The high solvency organic solvent should have a combustion value to make it suitable for use in gasoline engines. The carrier must be burned in a gasoline engine. Therefore, the organic solvent should be burned by a spark generated from a spark plug of a gasoline engine.
One class of high solvency organic solvents suitable for use in the present invention are alkyl substituted fatty amides, such as N, N-dialkyl fatty acid amides, and particularly N, N-dimethyl-9-decenamide. The organic solvent has a solvency of greater than 1000 and also has the following hansen solubility parameters: dispersion: 16.58, polarity: 9.58, and hydrogen bonding: 8.45. one such alkyl-substituted fatty amide is from Spilamper corporation
Figure BDA0001993744070000022
MET-10U。
Other fatty acid amides and amide esters having high solvency can be used. Many of these are disclosed in PCT application No. 2013/162926, the disclosure of which is incorporated herein by reference.
Another suitable organic solvent is alkyl hydroxybutyrate. In particular, butyl 3-hydroxybutyrate. The organic solvent has a solvency of greater than 100 and also has the following hansen solubility parameters: dispersion: 16.13, polarity: 6.541, and hydrogen bonding: 11.52.
typically, the cleaning compositions of the present invention will comprise from 1.0 wt% to 90 wt% of an organic solvent. More specifically, embodiments may include 0.5 wt% to 50 wt%, or 2 wt% to 20 wt% of the organic solvent, such as 2 wt%, 3 wt%, 4 wt%, 5 wt%, 6 wt%, 7 wt%, 8 wt%, 9 wt%, 10 wt%, 15 wt%, or 20 wt% of the organic solvent.
In addition, the cleaning composition will have a non-aqueous organic carrier and a surfactant that combine to form a stable solution. One particular carrier suitable for use in the present invention is n-propyl propionate, which is a flammable carrier. One such n-propyl propionate is sold by eastman chemical products corporation. Other suitable carriers include pentyl propionate, n-butyl propionate, isobutyl isopropionate and glycol ethers EB. In all formulations presented herein, the amount of carrier will form the balance to 100% of the formulation. Typically, the carrier will comprise from 0.1% to 99% by weight of the total composition, typically from 50% to 90%.
In addition to the carrier and organic solvent, the present invention will include a surfactant or surfactant blend effective to maintain a stable solution. In various embodiments, nonionic, cationic, and anionic surfactants are added to the carrier to emulsify those challenging cleaning deposits. The cleaning composition may comprise a nonionic surfactant. Any nonionic surfactant that can form a microemulsion between the carrier and the organic solvent can be used in the present invention. Typical nonionic surfactants include polyoxyethylene glycols, such as octaethylene glycol monododecyl ether or pentylene glycol monododecyl ether; polyoxypropylene glycol; glucoside alkyl ethers such as decyl glucoside, lauryl glucoside, or octyl glucoside; polyoxyethylene glycol octylphenol ethers, e.g. TRITON
Figure BDA0001993744070000031
Polyoxyethylene glycol alkylphenol ethers such as nonoxynol-9; glycerol alkyl esters, such as glycerol laurate; polyoxyethylene glycol sorbitan alkyl esters, such as polysorbates; sorbitan alkyl esters; cocamide MEA; cocamide DEA; dodecyl dimethylamine oxide; block copolymers of polyethylene glycol and polypropylene glycol and polyethoxylated tallow amine, and many other nonionic surfactants. These nonionic surfactants must be effective in producing microemulsions of the carrier and the organic solvent. Such suitable nonionic surfactants also include alkoxylated alcohols and modified alkoxylated alcohols, for example from Defester EnteDeIONIC LF and DeIONICLF-EP-15 from rprises, Inc. Another suitable surfactant includes ethoxylated alcohol esters, such as DeMULS KE-75 from Defest Enterprises, Inc. Another suitable surfactant includes modified alcohol ethoxylates, such as DeTERGELF-2379 from Deforest Enterprises, Inc. Typically, the cleaning composition will comprise from 0.5 wt% to 5 wt% of a nonionic surfactant. A blend of cationic and nonionic surfactants may be used. One such surfactant blend is Berol 226SA from Akzo Nobel Surface Chemistry LLC. The surfactant is a blend of a nonionic surfactant ethoxylated alcohol and a cationic quaternary amine compound. Typically, the surfactant will comprise from 0.1% to about 50% by weight of the cleaning composition.
Surfactants can generally support wetting. However, in various embodiments, the compositions of the present invention will comprise a separately added wetting agent to support better spreading and better cleaning. From 0.1% to about 20%, typically about 1.0%, by weight of the wetting agent will be used. Typical wetting agents include surface active agents (surfactants). One such wetting agent suitable for use in the present invention is Easy-Wet 20 from Ashland Inc (Ashland Inc), which is a blend of various nonionic surfactants (undecyl alcohol + EO polyethoxylate, 1-octyl-2-pyrrolidone, 1-undecanol) and an anionic surfactant (sodium lauryl sulfate). Easy-Wet 20 at 0.02 wt% significantly reduced the surface tension to less than 30 dynes/cm. It may be used in an amount of 0.1 to 20 wt%. Another such wetting agent suitable for use in the present invention is detropo CA-100 from defest Enterprises, Inc, which is a modified carboxylate corrosion inhibitor and wetting agent. Another such wetting agent suitable for use in the present invention is DesULF-80-LF35 from Defest Enterprises, Inc. Another such corrosion inhibitor and wetting agent suitable for use in the present invention is Burco RP-8888 from berlington Chemical inc.
Embodiments of the invention may also include a chelating agent, such as iminodisuccinic acid sodium salt. The chelating agent, if present, may constitute from 0.1 wt% to 20 wt% of the formulation. The chelating agent serves to bind metal ions present in the released soil. The formulation may also contain corrosion inhibitors to protect the clean metal, typically present in an amount of about 0.1% to 10.0%.
Embodiments of the present invention may also include fragrances and biocides. The fragrance is present in any desired amount, typically from 0.001% to 1.0% by weight, and the biocide is typically present in an amount of from 0.01% to 2.0%. Such fragrances suitable for use in the present invention are the mango-flavored synthetic Fragrance F-148707 and the spearmint-flavored synthetic Fragrance from Intarome Fragrance and Flavor Corp.
Preferably, the cleaning composition should have an alkaline pH, typically in the range of 9 to 11, especially about 10.5. If desired, a base (e.g., sodium carbonate) may be added to alter the pH.
To form the cleaning compositions of the present invention, a non-aqueous organic carrier and a high solvency organic solvent are blended with a surfactant and a corrosion inhibitor. As this mixing continues, any other desired components (e.g., chelating agent, fragrance, biocide, and finally wetting agent) are added and mixing is continued until a stable microemulsion is formed.
Due to the high solvency of the organic solvent, the composition can be added to the induced air induction system of a gasoline engine as described previously to effectively remove buildup at the intake valve. For example, the composition may be injected into the intake port while the engine is running. Additionally, the composition may be introduced into the fuel system (e.g., via pressurized bottles) to clean the fuel system. When the gas line/tank is disconnected, the engine can use the (run on) composition, burning or consuming it. The composition may also be used in fuel tanks, mixed with gasoline to clean parts in contact with gasoline, such as fuel injectors and combustion chambers. The composition may also be used in port fuel injection motors and fueled (lubricated) engines. Finally, the compositions described herein can be successfully mixed with common gasoline and hydrocarbon solvents (e.g., xylene, toluene, etc.) to clean carbon from engine surfaces. The composition of the invention may be used at any point during the life of the engine, but is typically used after the engine has been in use for a relatively long period of time (e.g. a car or truck has traveled 100000 miles) or when the gasoline mileage of the car or truck begins to decrease. Thus, it can be used for engines and vehicles that experience reduced performance, or only periodically as a preventative maintenance.
Typically, about 5 ounces to about 100 ounces, or 20 ounces to 40 ounces, of the cleaning composition will be introduced into the intake valve through the air intake system. Additional cleaning composition may be added if deposits on the intake valves are particularly severe or if performance problems are identified by borescope or OBD scanning tools. The injection rate should be about 3 gallons per hour.
Accordingly, the present invention provides a cleaning composition and a method of using the cleaning composition to remove carbonaceous oily buildup on intake valves of gasoline engines. This will effectively extend the life of the engine and provide improved overall performance. Suitable formulations containing solvents with high solvency, no flammability value are listed below:
Figure BDA0001993744070000051
Figure BDA0001993744070000061
the above formulation was tested on a modern sattana (2.4L GDI engine) with 23000 miles of direct injected gasoline. There was a clear black deposit on the intake valve. When the car was running, 44 ounces of the above formula was used for induction (cleaning). The cleaning process results in a cleaner intake valve. The above formulation was also tested on a modern sonata SE with 25527 miles of direct injected gasoline. There was a noticeable black deposit on the fuel rail and piston crown. The piston crown cleaning process is performed after the fuel rail treatment and without inducing cleaning. The cleaning process results in cleaner fuel rails and piston tops.
Formulation B Weight (%)
Steposol Met-10U 15.0
Berol 226SA 15.0
Propionic acid n-propyl ester 68.8
Detrope CA-100 1.0
Mango-flavored synthetic fragrance for cleaning 0.2
Formulation C Weight (%)
Steposol Met-10U 10.0
Steposol SC 20.0
DeIONICLF 5.0
Propionic acid n-butyl ester 75.0
Figure BDA0001993744070000062
Figure BDA0001993744070000071
Formulation E Weight (%)
Steposol Met-10U 15.0
Steposol SB-W 15.0
DeSULF-80-LF35 10.0
DeIONICLF-EP-15 5.0
Propionic acid n-butyl ester 55.0
Formulation F Weight (%)
Radia 7543 10.0
Steposol SB-W 10.0
Omnia 10.0
DeTERGELF-2379 10.0
Propionic acid n-propyl ester 60.0
Formulation G Weight (%)
Steposol Met-10U 15.0
Berol 226-SA 15.0
VertecBioElsolTR 69.0
Easy-Wet TM-20 1.0
Figure BDA0001993744070000072
Figure BDA0001993744070000081
Formulation I Weight (%)
Steposol Met-10U 30.0
Berol 226-SA 30.0
Easy-Wet 20 2.0
Propionic acid n-propyl ester 38.0
Formulation J Weight (%)
Steposol Met-10U 15.0
DeMULSKE-75 15.0
Easy Wet 20 1.0
Propionic acid n-propyl ester 69.0
Formulation K Weight (%)
Steposol MET-10U 7.0
Berol 226-SA 7.0
Easy Wet 20 1.0
Propionic acid n-propyl ester 52.0
VertecBioElsolTR 33.0
Figure BDA0001993744070000082
Figure BDA0001993744070000091
The above formulation was tested on a modern sattana (2.4L GDI engine) with 28866 miles of direct injected gasoline. There are distinct black deposits on the intake valve, fuel rail and piston crown. When the car was running, 44 ounces of the above formulation was used to induce cleaning. The cleaning process on the top of the piston is performed after the induced cleaning of the fuel rail. The cleaning process results in cleaner intake valves, fuel rails, and piston tops.
Formulation M Weight (%)
Steposol MET-10U 14.0
Berol 226-SA 14.0
Easy Wet 20 1.0
Burco RP-8888 2.0
Propionic acid n-propyl ester 33.0
VertecBioElsolTR 33.0
Deionized water 3.0
Formulation N Weight (%)
Formulation A 50
Toluene 25
Xylene 25
The above formulation was tested on a modern sattana (2.4L GDI engine) with 26808 miles of direct injected gasoline. There was a clear black deposit on the intake valve. When the car was running, 44 ounces of the above formulation was used to induce cleaning. The cleaning process results in a cleaner intake valve. The above formulation was also tested on a modern sattana with 27217 miles of direct injected gasoline. There was a noticeable black deposit on the fuel rail and piston crown. The piston crown cleaning process is performed after the fuel rail treatment and without inducing cleaning. The cleaning process results in cleaner fuel rails and piston tops.
This is a description of embodiments of the invention and methods of practicing the invention. However, the invention should be defined by the appended claims.

Claims (18)

1. A method for cleaning an intake valve of an engine, comprising:
introducing a cleaning composition into the intake valve of the engine while the engine is running;
the cleaning composition comprises:
a microemulsion comprising an alkyl hydroxybutyrate having a polar hansen solubility parameter greater than 6 and a combustion value suitable for use in gasoline engines and having a solvency power effective to dissolve deposits on the valve;
an organic vehicle; and
a surfactant effective to establish a microemulsion of the alkyl hydroxybutyrate and the organic carrier.
2. The method of claim 1, wherein the surfactant is a nonionic surfactant.
3. The method of claim 1, wherein the cleaning composition further comprises a wetting agent.
4. The method of claim 1, wherein the alkyl hydroxybutyrate has a Kb greater than 100.
5. The method of claim 1, wherein the alkyl hydroxybutyrate has a Kb of greater than 500.
6. The method of claim 5, wherein the Kb is greater than 1000.
7. The method of claim 1, wherein the organic carrier is selected from the group consisting of: n-propyl propionate, pentyl propionate, n-butyl propionate, isobutyl isopropionate and glycol ether EB.
8. The method of claim 1, wherein the surfactant is an alkoxylated alcohol.
9. The method of claim 1, wherein the surfactant is an ethoxylated alcohol ester.
10. A method for cleaning an intake valve of an engine, comprising:
introducing a cleaning composition into the intake valve of the engine while the engine is running;
the cleaning composition comprises:
a microemulsion comprising butyl 3-hydroxybutyrate having a polar hansen solubility parameter greater than 6 and a combustion value suitable for use in gasoline engines and a solvency effective to dissolve deposits on the valve;
an organic vehicle; and
a surfactant effective to establish a microemulsion of said butyl-3-hydroxybutyrate and said organic vehicle.
11. The method of claim 10, wherein the surfactant is a nonionic surfactant.
12. The method of claim 10, wherein the cleaning composition further comprises a wetting agent.
13. The process of claim 10, wherein the butyl 3-hydroxybutyrate has a Kb of greater than 100.
14. The method of claim 10, wherein the butyl 3-hydroxybutyrate has a Kb of greater than 500.
15. The method of claim 14, wherein the Kb is greater than 1000.
16. The method of claim 10, wherein the organic carrier is selected from the group consisting of: n-propyl propionate, pentyl propionate, n-butyl propionate, isobutyl isopropionate and glycol ether EB.
17. The method of claim 10, wherein the surfactant is an alkoxylated alcohol.
18. The method of claim 10, wherein the surfactant is an ethoxylated alcohol ester.
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HRP20210875T1 (en) 2021-09-03
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US20170081621A1 (en) 2017-03-23

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